diff --git a/src/d3d10/d3d10_device.cpp b/src/d3d10/d3d10_device.cpp
index dfd0bdd0..e35e131a 100644
--- a/src/d3d10/d3d10_device.cpp
+++ b/src/d3d10/d3d10_device.cpp
@@ -8,7 +8,7 @@ namespace dxvk {
   D3D10Device::D3D10Device(
           D3D11Device*                      pDevice,
           D3D11ImmediateContext*            pContext)
-  : m_device(pDevice), m_context(pContext) {
+  : m_device(pDevice), m_context(pContext), m_multithread(this) {
     // Respecting the single-threaded flag may improve performance
     UINT flags = pDevice->GetCreationFlags();
     m_threadSafe = !(flags & D3D10_CREATE_DEVICE_SINGLETHREADED);
diff --git a/src/d3d10/d3d10_device.h b/src/d3d10/d3d10_device.h
index df9d50fd..bdc8e7fa 100644
--- a/src/d3d10/d3d10_device.h
+++ b/src/d3d10/d3d10_device.h
@@ -1,12 +1,9 @@
 #pragma once
 
-#include "d3d10_include.h"
+#include "d3d10_multithread.h"
 
 namespace dxvk {
 
-  using D3D10DeviceMutex = sync::Spinlock;
-  using D3D10DeviceLock = std::unique_lock<D3D10DeviceMutex>;
-  
   class D3D11Device;
   class D3D11ImmediateContext;
 
@@ -473,6 +470,10 @@ namespace dxvk {
             UINT*                             pWidth,
             UINT*                             pHeight);
     
+    D3D10Multithread* GetMultithreadIface() {
+      return &m_multithread;
+    }
+    
     D3D10DeviceLock LockDevice() {
       return m_threadSafe
         ? D3D10DeviceLock(m_mutex)
@@ -484,6 +485,7 @@ namespace dxvk {
     D3D10DeviceMutex        m_mutex;
     D3D11Device*            m_device;
     D3D11ImmediateContext*  m_context;
+    D3D10Multithread        m_multithread;
 
     bool m_threadSafe = true;
 
diff --git a/src/d3d10/d3d10_multithread.cpp b/src/d3d10/d3d10_multithread.cpp
new file mode 100644
index 00000000..9f3949fd
--- /dev/null
+++ b/src/d3d10/d3d10_multithread.cpp
@@ -0,0 +1,42 @@
+#include "d3d10_multithread.h"
+#include "d3d10_device.h"
+
+namespace dxvk {
+
+  HRESULT STDMETHODCALLTYPE D3D10Multithread::QueryInterface(
+          REFIID                    riid,
+          void**                    ppvObject) {
+    return m_device->QueryInterface(riid, ppvObject);
+  }
+
+  
+  ULONG STDMETHODCALLTYPE D3D10Multithread::AddRef() {
+    return m_device->AddRef();
+  }
+
+
+  ULONG STDMETHODCALLTYPE D3D10Multithread::Release() {
+    return m_device->Release();
+  }
+
+
+  void STDMETHODCALLTYPE D3D10Multithread::Enter() {
+    m_lock = m_device->LockDevice();
+  }
+
+
+  void STDMETHODCALLTYPE D3D10Multithread::Leave() {
+    m_lock.unlock();
+  }
+
+
+  BOOL STDMETHODCALLTYPE D3D10Multithread::GetMultithreadProtected() {
+    return m_enabled;
+  }
+
+
+  BOOL STDMETHODCALLTYPE D3D10Multithread::SetMultithreadProtected(BOOL Enable) {
+    return std::exchange(m_enabled, Enable);
+  }
+
+}
\ No newline at end of file
diff --git a/src/d3d10/d3d10_multithread.h b/src/d3d10/d3d10_multithread.h
new file mode 100644
index 00000000..81d5dbce
--- /dev/null
+++ b/src/d3d10/d3d10_multithread.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include "d3d10_include.h"
+
+namespace dxvk {
+
+  using D3D10DeviceMutex = sync::Spinlock;
+  using D3D10DeviceLock = std::unique_lock<D3D10DeviceMutex>;
+  
+  class D3D10Device;
+
+  class D3D10Multithread : public ID3D10Multithread {
+
+  public:
+
+    D3D10Multithread(D3D10Device* pDevice)
+    : m_device(pDevice) { }
+
+    HRESULT STDMETHODCALLTYPE QueryInterface(
+            REFIID                    riid,
+            void**                    ppvObject);
+    
+    ULONG STDMETHODCALLTYPE AddRef();
+
+    ULONG STDMETHODCALLTYPE Release();
+
+    void STDMETHODCALLTYPE Enter();
+
+    void STDMETHODCALLTYPE Leave();
+
+    BOOL STDMETHODCALLTYPE GetMultithreadProtected();
+
+    BOOL STDMETHODCALLTYPE SetMultithreadProtected(BOOL Enable);
+
+  private:
+
+    D3D10Device*    m_device;
+    D3D10DeviceLock m_lock;
+    bool            m_enabled = true;
+
+  };
+
+}
\ No newline at end of file
diff --git a/src/d3d11/d3d11_device.cpp b/src/d3d11/d3d11_device.cpp
index b5e13a5d..175b4de8 100644
--- a/src/d3d11/d3d11_device.cpp
+++ b/src/d3d11/d3d11_device.cpp
@@ -61,6 +61,11 @@ namespace dxvk {
       return S_OK;
     }
     
+    if (riid == __uuidof(ID3D10Multithread)) {
+      *ppvObject = ref(m_d3d11Device->GetD3D10Interface()->GetMultithreadIface());
+      return S_OK;
+    }
+
     if (riid == __uuidof(ID3D11Device)
      || riid == __uuidof(ID3D11Device1)) {
       *ppvObject = ref(m_d3d11Device);
diff --git a/src/d3d11/meson.build b/src/d3d11/meson.build
index a8596b76..c0889b20 100644
--- a/src/d3d11/meson.build
+++ b/src/d3d11/meson.build
@@ -4,6 +4,7 @@ d3d10_src = [
   '../d3d10/d3d10_depth_stencil.cpp',
   '../d3d10/d3d10_device.cpp',
   '../d3d10/d3d10_input_layout.cpp',
+  '../d3d10/d3d10_multithread.cpp',
   '../d3d10/d3d10_query.cpp',
   '../d3d10/d3d10_rasterizer.cpp',
   '../d3d10/d3d10_sampler.cpp',